รบกวนช่วยดูเงื่อนไขหน่อย ทำไมค่า text ไม่ออก ออกแต่ค่า radio

<ul>
     <?
	  if($rec['h_rdo1'] == "YES")
        { 	
             $yes = "checked";
             $no = "";
	     $congenital=$rec['yes_con']; 
             }
        else if($rec['yes_con']!="")
        { 	
             $yes = "checked";
             $no = ""; 
	     $congenital=$rec['yes_con']; 
             }
		else if($rec['h_rdo1']=="NO")
		{
			$yes = "";
                        $no = "checked";
			$congenital=""; 
			}
      ?>
    	<li>1. do you have congenital disease ? <input name="txt_health1" type="radio" value="YES" <? echo $yes?> /> yes</li>
        <li><input name="txt_yes_con" type="text" value="<? echo $congenital?>" /></li>
        <li><input name="txt_health1" type="radio" value="NO"  <? echo $no ?>/> No.</li>
     </ul>